Ubuntu
udev package

  1. Oneiric (11.10)
  2. Bug #818177
  3. Comment #48

Comment 48 for bug 818177

Revision history for this message
Steve Langasek (vorlon) wrote : Re: boot failures caused by udev race

The last udev event shown in the failure case is this one:

UDEV [3.735566] change /devices/virtual/block/dm-0 (block)
UDEV_LOG=3
ACTION=change
DEVPATH=/devices/virtual/block/dm-0
SUBSYSTEM=block
DM_COOKIE=4228816
DEVNAME=/dev/dm-0
DEVTYPE=disk
SEQNUM=1092
DM_UDEV_PRIMARY_SOURCE_FLAG=1
DM_NAME=test--vg-test--lv
DM_UUID=LVM-4iWtHXttRCwYKe6cxdfiFUSSU9pFQ9Zelj82pgIWg6GreSTESCmwv43yf6Nrf5s2
DM_SUSPENDED=0
DM_UDEV_RULES=1
DM_VG_NAME=test-vg
DM_LV_NAME=test-lv
DEVLINKS=/dev/mapper/test--vg-test--lv /dev/disk/by-id/dm-name-test--vg-test--lv /dev/disk/by-id/dm-uuid-LVM-4iWtHXttRCwYKe6cxdfiFUSSU9pFQ9Zelj82pgIWg6GreSTESCmwv43yf6Nrf5s2 /dev/test-vg/test-lv
MAJOR=252
MINOR=0

So that points to an lvm problem in this case, at least.

I also notice a difference in this event - DM_SUSPENDED=0 vs. =1:

UDEV [3.709786] add /devices/virtual/block/dm-0 (block)
UDEV_LOG=3
ACTION=add
DEVPATH=/devices/virtual/block/dm-0
SUBSYSTEM=block
DEVNAME=/dev/dm-0
DEVTYPE=disk
SEQNUM=1091
DM_SUSPENDED=0
DM_UDEV_RULES=1
MAJOR=252
MINOR=0
DEVLINKS=/dev/disk/by-id/dm-name-